Apparatus for stopping engines



N0 Model.) 2 Sheets---Sheet 1 J. P. TI'RRELL.

APPARATUS FOR STOPPING ENGINES.

Na-469,669. Patented Febu'Z'S. 1892.

\A/i]; 52555 5 DIP/5111152. W, 6465 67 1 Q s 4 I (No Model.) 2Sheets-Sheet 2 J. P. TIRRELL.

APPARATUS FOR STOPPING ENGINES.

N6. 466,666. P6666666. P66. 26,1692.

\Mih E5555,-

5mm; i OF BOSTON, ASSIGNOR To WASi-HNGTON ii. 'KILBGURN,

' OFGREE mew, MAseAoiiUsETTe.

SFEGEFIQATZQN fomniiig part of Leters Potent 330, $269,569, dafcec'iFebruary 23, 1895? Application riled October 24 1891,

erm 1%. 409,556. (1% model.)

2's a-ZZ who-i1 2, z iii/my con/corny Be it known that I, JACOB i.TIRRELL, oi Boston, in the county of Suffolk and State of Massachusetts,have invented certain new and useful Improvements in ApparatusEMS-topping Engines and other Motors, of which thefoiiowingicQSpecification.

This inveni'ion reiz'i-Ees to on appamjius oi meaiis whereby theoperation of simmerigine or oi'nei' motor sueh an; zi'wat-er-wiieei,dineine be quickly-flopped from various parts Gk building oresiiiiiiishment in whioh it is located.

My invention has for its chief object to provide an e1ectricaliyeontroiied mechanism of such construct-ion that 11 p011 the-ciosiii'e(or breaking} of an electric circuit said n1eoiia.uism wiii heauiomotioaiiy engaged wiih V a moving part of ihe engine so as toreceive power therefrom and wiii first transmit the power received tothe throttie-vaive, thereby closing iiie same and stopping the engine,anti wiii then be aoioma-tieziiiy reset; for on other operation L iiiecomieeied from the engine, leaving the ilii'otitie-va-ive free to beopened by the engineer when it is iies'iii'e i 1 again ciao; the i'iiG.These resoiis i zitmin the improved mechanism which i will now proceedto describe and claim.

the accompanying drawings, forming a "Taft oi. this s; -cificaiion,Figure 1 represents Ni 2i iiu'oHi-e eievation the atom of .zs'iiiicont-rolling meciiii my invention, siiici in H1? be *1. its

iiso'i inoperative position i oios I, k :1 rep? ion on one i oi 2,icoici zm eieci'i'io eii'ciiii'g, z and made opera ogrezetioii may'iiiyciosed i .as Water-wheels, wiudmiiis L se-the 21d213iation of myimprovements fie such motors rcquii'ing oniy the exercise of ordinarymechanicai skill and juiigment.

b IOQYGSQIHLS a sailor; shaft journal-ice in. time bearings c c, whichare here shown as sup" ported by a fixed bracket or frame d.

Y) represents another shortei'iaft, journaiefi. in fixed bearings c, theSaki siiafin Zfoeing" arranged in line with the shaft 1.

Ai'fixeci to one end of the shafibie a giniiey e, which 15 rotated by a.belt cozmect-ing'it with a pulley diiven by the engine or motor, sa'i-ii pulley rotating the shaft 1). Saifl shaftb has also affixed. ioiiat its oi-iiefeufi 2i 111 icy f, fori'ning one part of africi'iowointcil device hereinafter described. To the chiiftb areaffixed R. SpFOCiiQiFWilQQi? andiiiek h the Two being zi'fii to the camehob FJI II represent two oi frictimi-piiiieyf on the shaft 3), saidbmdsieiisg attached to the disk 71 on the shaft 1 ti: i i

v n a suitable mam-191', hereinafter desceioede Enid band '1 ha a coting Gui;-

: L of one from and c 1: the adjoin iim'i; the puiieyf win 1'withoutimitating the ia'tiei the c1511 which they are connected.

j 3' represent levers, whiciizire pivoied 5 to owe on the disk 72 Thesilo-fie: said levers are biimeateil and oars on the outer skies of twoadjoining cars '21 the bamis i, the bifurcated em 5 bein joiiieci by(Lil adjustingecrcwj i of said. we. The screw j is ac aaijost iiiebii'areeted. ends of is as so for wear of the ciuicii. Levic-ee e iii'oii'oo i sofiieie 33135, toil-Howe farther- "wcei'i to.

xiii-bands scrrom'iding Lil lug: the cars i occupies when the bandnearer together by said screw j thus bringnearer together and tighten ing thecliitclrbands. It will be seen that the lovers; support the bands2 i and form a connection between them and the disk 72.

l:- reprcseuts a collar slidingon the shaft 1), with which the longerarms of the leversjj are connected in any suitable manner, preferably bymeans of short links forming a toggle-joint, as shown.

The outer surfaces of the ears 5 are i nclined, said ears being, thinnerat the outer end than at the base, so thatthe collar 1.: he mpved awayfrom the disk 72, or to the left, as viewed in Fig. 1, the levers j willbe moved so as to press inwardly upon the outer wedgeshaped surfaces ofsaid cars, thus causing the bands '1' to tighten upon the pulleyf sothat said bands and the dish 71, and sprocket-wheel 9 connectedtherewith, and the shaft I), to which said parts are afiixed, will allbe rotated w th said pullcyf and the shaft b, to which it is affixed.

I Figure 1 shows the devicein the position it s '2' are loose upon thepulley f, so that the shaft Z) is not rotated, while Fig. 2 shows theposition when said bands are tightened upon said pulley, thus causingthe shaft 6 to rotate with the shaft Z).

The sprocket-wheel g is connected by a fiPI'OC-kGlI-Oi'lfilil g with asprocket-wheel a on the valve-stem (i.

a m represents an arm or lever pivoted to the supporting-frame d, andengaged with the collar I: on the shaft Z) by means of a pin aiiixed.to' said lever, runningin a groove in said collar.

'22- represcnts an arm or lever, also pivoted to the supporting-frame.The levers m and n are connected with each other by means of a link m,which is pivoted on the lover or, and which has a slot which receives apin a, projecting from the lever 91.. The lever his normally pressedaway from the lever m or towardthe left, as viewed in Fig; '1, by aspring 0; as shown. Said lover a is provided with a pin it at its lowerend, which moves in a slot 11' in the upper end of a lever 11, which ispivoted at p to the supportingframe. The lower arm of the level-J) isengaged, when the device is set or ready for use, with a detent g on thearmature got an electro-magnet. The form of the slot 1) in the lever 19is such that when the device is set, as shown in Fig. 1, thelGVQlV'llE-l held against the pressure of its spring 0 and cannot movefrom said position.

In the form of the device shown in the drawings the electric circuits inwhich the electromagnets r 1' are included is normally broken and may beclosed by a push-button at any! desired point or points or by any othersuitable device. When the said circuit is closed, the magnets r r areenergized and the armature q is drawn' downwardly, thus releasing thelevcrp. It ist-o be here noted that the form of the lever 17 is suchthat when the do vice is set the pin a of the levcrn bears on said lever1 at a point close to the plVOtPOIII'E thereof, so that the lateralpressure exerted .by the springpressed lever n on the longer eud of saidlever p and the detent q on the armature q is butslight, and asaconsequence a slight force is sufficient to draw said armaturedownwardly and release said lever, as above stated. This enables a greatsaving to be made in battery-power, and it has been found in practicethatfour ordinary cells are ample to energize the magnets r '/'to adegree sutiicient to draw down the armature and release thclever. Afterthe lever 72 is released by the detent q, as above stated, the spring 0forces the lover a to the position shown in Fig. 2, said lover a pullingthe lever m over I to the position shown in said figure, and thus movingthe collar 7.: on the shaft 1), so as to cause the clutclrbands itotighten on the pullcy f, and thus cause the shaft h and thesprocket-wheel g to rotate with the shaft 1). The lever m is engaged bya spring-catch or deteut .s" when pulled over by the lever 12, as shownin Fig. 2. While in this position the power of the engine rotates thesprocketwheel L and through the chain g," and sprockcowhcel (1' alsorotates the stem a of the throttle-valve.

To mevent the positive rotation of the sprocket-wheel g'aftcr the valveis closed and to reset the mechanism above described, I provide thefollowing automatic devices.

The end portionof the shaft Z1 farthest from the clutch devices isscrew-threaded, and a not If is placed on said scrmv-threaded portion.The nut b is preven ed from rotating with said shaft by means of an earor lug 7)", (shown in dotted lines in Fig. 3,) said lug projecting fromsaid nut and haviugan opening which receives a pin or guide I), affixedto the supporting-frame and arranged parallel with the shaft 7), saidear sliding on said pin or guide. The not b is formed to engage thelever "/2. and is adapted, when moved to the end of the screw-threadedportion o the shaft 1) nearestsaid lever '12, to move the same againstthe stress of its spring 0 back to its set position, as shown in Fig. 1.

The operation of those devices as fol lows: As soon asthc magnets 'r rhave been oncrgized and the lever 1'1 1'lG2lS9(l,i3ll(-3 lever n andlover m willassumethepositiousshown in Fig. 5., thus operating theclutch and causing the shaft 1') to rotate with the shaft 11, as abovedescribed. \Vhcnevcr the shaft 3) begins to rotate the nut I is moved bythe screw-thread on said shaft toward the lever 71,. or to the right, asviewed in Fig. 2. The said nut 0-, as it moves along, presses thelevernback to ward its set position, or the position shown in Fig. l, the saidnot being so adj ustcd on the shaft 1) that the number of revolutionsofsaid ICC shaft required to shut the throttle-valve will bring the saidnut b to the 0nd of its inward movement, by whichitime said nut hasoomplctcdits work of resetting the device. As

1 some The lever n ES, lioweveighelii against-pressure in iliis (li- 2oiion by its springcsich The lever n, as it pressed cook by the nut 7:also moves ihe lever p heel-c to its set position, the eurl of he love?j) rising; over the LlGlGl; l1 gfl'ihe rear side of which is beveled forthis purpose The lever n is provioeil' with a, suitable proj eoiion, usn which is adspied to press'clown the catch sand release the lever m,the latter oeing immediately forced heel: to its sci; position by thepressure of the spring m The projec. tion 72 and the incline on theceioh s, with which it cooperates, are so placed that said catch isclispleee l-aml will release the lever m immediately after the lever 12has reached its set position and has again become engaged with thedetent q, as shown in Fig.1. When the lever is released and moved backto its set position, the clutch device is mode inc?- erstive and theshaft b ceases to rot-ale with the shaft 7), The not 6 remains in theposiiion shown in full lines in Fig". 1 until it is moved back to theposition shown in dotted lines in said. figure bythe roi'ationof theshaft 1) in the opposite direction by the openingof ihe throttlewelve byno engineer o'rothcr air tends-n1, the movement of the valve-stem lie-fcommunicates; io the shaft 5 by the sprocket-wheel a, chain 9, soilspro'okeii wheel 9. v

. I prefer to provide the supporting-bracket d was; slots d d, throughwhich the screws 1 (1 which secure the said bracket toasuit able support"Jess, the object of said slots being to enable the bracket (Z to bemoveil up or down to compensate -for variations in the length'of thesprocket-chain g caused by wear or otherwise. I have also provided asuitable bolt (not shown) passing throi'igh the oven hanging top 01 0fthe oraeketd unfiengaging a suitable nut fixed in a suitable s'u pportabove soicl bracket for siljusting the letter;

it will. be seen that the essential features or groups of elements ofthe apparatus are as follows: first, a connection between the throteileq elve and a moving part of em engine, this connection being in thepresent case the sprocket chain and wheels, the pulley e, and the beltthat connects said pulley with a shaft forming-a part of or driven bythe engine or n'i-otoiz Said connection must he separable or of suchnature that eeu' he made ulierneitely operative and inoperative, sothat-when open olive it enables the momentum of the engine to close thethrottle and when inoperative she ogze'miion of the engine has noeffecfi on the throttle, this result beingacoomplished by the ijwocloioii members, one of which is independently newbie; secondly, meanswhereby. ihfi visions ofiseid' connections maybe consome on madeopcraiive to stop inc engine by ilhe set of en ooeretor or attend t.-

point. Snitshle means for .so are here n loony" Q5 move i141 thedevicesior one r ng p rcssure on levers, and, secondly, liloelcei-rically-eoned select-adopted to @reveni; the engage inentoiiclutchniunerswheni-he in operation, exeepling when it is ciosirecl .conrlitionto be operated by an eiieni'loni, e:

in distant poini. I believe that these features or groups of eleinen tshave never before been combined in an organized apparatus. Hence I donot limit myself to the particular devices composing the severalfeatures or groups here in shown and described, and may variously modifythe organization aud'deiails of each fee/cure or group without departingfrom the spirit of the invention. it will he understood that my use ofthe term tl1rottie-vzil\'e.is

generic and is intended io cover any oevioe that controls the admissionof the motive power to an engine or otherjmotor.

l clnixna y Y 1. In an apparatus for stopping on engine or other motor,a power-eontrollinq device,

such as throitle velve, a, con neoizion between the same anclthe engineor meteor, through which the -power-eontrolling device may he operaieclby the rnoinenizunz of the engine to shni, off the source of power, saidconnection being composed of two normally separated and inoperativeperis, and an elcciricslly conirolled coupling device, whereby said.ports maybe operoiiively connoctocl to stop the en gine.

2. in an nppersins for siopping an engine or other motor, a.power-controlling ciev. i, such as e throttleahoe coinpounl leveradepteh'when released, to connect a normalin an apnsraius for stoppltigon.

l'iO

oiio'ther' motor, apowencontrolling cle'vi oe,

such: as a throttle-valve, a shaft h, rota teclliy the engine, e'noihershaft f in line Wiih iifilil shalt Z2 noe having clinch devices, which,Whenooerzitive', cause the shaft 1) to rotate with the shaft 7),oonnecnons between said snai s o and. the powebcoutrolling ilevice,wherehyihe letter is {sensed to shut off the power when 'ihe former isrotated by ishesheie 4 senses I and electrically-controlled mechanicaldevices, whereby said cl ntch mechanism is made operative, as set forth.

4. In. an apparatus for or other motor, a powersuch as a throttle-valve,a shaft h, rotated by the engine, another shaft 5 in line with saidshaft 11 and having clutch devices, which, when operative, cause theshaft 1) to rotate with the shaft 12, connections between said shaft 1)and the power-controllin :i device, whereby the latter is caused to shutoil the power when the former is rotated by the shaft ,0,electrically-controlled mechanical devices, whereby said clutchmechanism is made operative, and means whereby said mechanical devicesare reset for another engine-stopping operation by the same rotations ofthe shaft 1 that cause the shutting of the power-coir trolling device,asset forth.

5. In an apparatus for stopping an engine or other motor, apower-controlling device, such as a throttle-valve, a shaft Z),rotatedby the engine, a pulleyf, afiixed to said shaft, another shaft(1' in line with the shaft Z), connections between said shaft b and thethrottlevalvc, whereby the rotationoi the former will close the valve, aclutch device on said shaft .i,adaptcd, "when operative/to acton thepulley f and cause the shaft 1) to rotate with the shaft 7), thespring-actuated lever n, normally adapted to render said clutchmechanism on erative, the slotted lever p, engaged with the lever n, thearmature q, having a detent which engages the lever 19, and thus holdsthe lever n in its inoperative position, and an electromagnet, which,when. energized, will attract the armature q and cause the release ofthe lovers p and n, and thus permit the latter to move to itsclutch-operating position, as set forth.

6. In an apparatus for stopping an engine or other motor, apower-controlling device, such as a throttle-valve, a shaft I), rotatedby the engine, a pulley f, afiixed to said shaft, another shaft 7) inline with said shaft b,eonnections between said shaft Z) and thepowercontrolling device, whereby the rotation of the said shaft willcause the said device to sh nt oil, the power of the motor, a clutchdevice on stopping an engine controlling device,

said shaft 2'), adapted, when operative, to act-- on the pulley f andcause. the shaft Z) to retate with the shaft 1), the spring-actuatedlever n, normally adapted, through suitable connections, to render saidclutch device openitive, thoslotted level-p, engaged with the lever 72,the armature q, having a detent which engages the lever 19, and thusholds the lever 02- in its inoperative position, an olectro-nlagnot,which, when energized, will attract the armature q and cause the releaseof the le vcrs 1) and n, and thus permit the latter to move to its clntclrmierating position, a locking device adapted to retain the clutchmechanism in operative position until the power has been shut oil by thepoo'er-controllingrte- ,vice, and automatic 1' paratns for anotherengine-stoppingoperainc operated and to release the clutch mech anismwhenever the power is shut off and the apparatus reset, as set forth.

7. In an apparatus for stopping an engine or other motor,power-controlling device, such as a throttle-valve, a shaft l), rotatedby the engine, a pulley f, affixed to said shaft, another shaft 7) inline With the shaft L, connections between the shaft 1) and thethrottle-valve, whereby the rotation of the shaft will closethe valve, aclutch device on said shaft h',adapted, when operative, to act on thepnlleyf and cause the shaft 11" to rotate ,with the shaft 1), the lever'H'l, connected with said clutch device, the spring-pressed lever n,connected with the lever in and adapted to move the latter so to renderthe clutch op era! ive, the connections between the levers m the former,the slotted lcve'rp, with which the detent, which engages the lever 12,and thus holds the lever n in its inoperative position, anelectro-inagnet, which,when energized, will attract the armature q andcause the release of if e lovers 1.) and wand th us permit said lever itto act and move the lever in to its clutclr operatin position, a catchto lock said lever m in said clutch-operating position, a deviceoperated by the rotation of the shaft I) toreturn the lever n to itsinoperative position and to re-engage the lever 27 with the detent onthe armature and. devices to disengage the lever m from itseatcliwhenever the lever p is engaged with the detont and return said lever"in to its inoperative position, thus releasing the clutch, as setforth.

S. In an apparatus for stopping engines, the combination, with a sl aftwhich is adapted to be rotated by the engine, and the throttlevalve ofthe engine, of a sprocket-wheel on said shaft, another sprocket-wheel onthe stem of said valve, and a s1n'ocket-chain running on saidsprocket-whecls and forming a coin nection between the said shaft andvalvestem, whereby the latter is rotated by the rotation of the former,as set forth.

In testimony whereof I have signed Ill) name to this specification, inthe presence of two subscribingwitnesses, this 29th day of September, A.l). 1801.

, JACOB l. 'JIRRELL. liitncsses:

(I. F. BROWN,

EWING W. lIAnLnN.

lovices to reset the an lion while the powencontroili11gdevice be" and nbeing such that the latter can approach lever n is engaged, the armature(1, having; a

